India, Dec. 14 -- Nothing can prepare you for the unruly force and energy that actor Rose Byrne brings to If I Had Legs I'd Kick You, a film that aims to shake the viewer and succeeds in doing so. The Australian actor, whom you might remember from Bridesmaids, gives it her all in a full-bodied performance of a woman enduring one panic attack after another as her days merge into nights, and there's no difference after a point. You have no other choice but to follow her.

Mary Bronstein's visceral, uncompromising vision demands full attention- it is a portrait of a woman stretched to her limits, forced to maintain her composure even when she knows her life is falling apart. What can she do? Her Linda damages everything she touches.

The ser...